Is there a solvent or dremel attachement that will remove this stuff from bolt threads?

You don't need solvent or dremel. It will keep any screw or bolt from loosening, but you can get the bolt/screw out with a screwdriver and just brush off the Loctite. Very good stuff.

Do I apply this to my doorknob set screw before screwing it in or after? (ie, a drop on top?)

Before. You apply this to the screw threads before screwing in. Make sure you only apply a very little bit. More is not better.

how do I open the sealed tube? do I just poke a hole at the top?

I think it's best to use a thumbtack, safety pin, etc. to poke a hole into the flat tip. This will give you "droplet-sized control" in application.

can this be used in glasses? The screws that hold the lenses in place?

No, it is designed for larger screws. Use Loctite 222 for small screws.

Heavy Duty Threadlocker 0 2 Oz Blue 242 12 Pack

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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2151 DH

Duties & taxes included

In stock

Sold byAmazon MoroccoDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Lock it down, level up your projects!

FAST ACTING FORMULA - Sets quickly in just 10 minutes, so you can get back to work without delay.
RUST LEAK DEFENSE - Seals threads to prevent leaks, rust, and corrosion—extending the life of your equipment.
VIBRATION PROOF SECURITY - Prevents loosening even under heavy vibration—your gear stays locked in place.
SERVICE FRIENDLY STRENGTH - Medium strength allows easy disassembly with hand tools, balancing durability with maintenance needs.
PRECISION FIT FOR 6 20 MM FASTENERS - Perfectly engineered for a wide range of fastener sizes common in professional and DIY projects.

Loctite Blue 242 Heavy Duty Threadlocker is a fast-drying, medium-strength gel designed to lock and seal threaded fasteners from 6 to 20 mm. It prevents loosening from vibration, protects against leaks and rust, and fully cures in 24 hours. Ideal for automotive, construction, and DIY use, it offers professional-grade reliability with easy removability for servicing.

Specifications

ASIN	B01EZTPX8A
Best Sellers Rank	604,807 in Automotive ( See Top 100 in Automotive ) 1,520 in Fillers, Adhesives & Sealants
Brand	Loctite
Colour	Blue
Compatible Material	Stainless Steel
Container Type	Box
Customer Reviews	4.8 4.8 out of 5 stars (75)
Full Cure Time	24 Hours
Global Trade Identification Number	30079340242006
Included Components	Threadlocker Tubes (12)
Item Form	Gel
Item Package Quantity	1
Item Type Name	Loctite Blue 242 Threadlocker 6-Milliliter Tubes, Case of 12 (209728-12)
Item Volume	15 Millilitres
Item Weight	0.1 Pounds
Manufacturer	Henkel Corporation
Manufacturer Part Number	Loctite - 209728 - 12pk
Material	Stainless Steel
Model Number	209728-12
Number of Pieces	1
Other Special Features of the Product	Fast Drying
Specific Uses For Product	Automotive, Construction, DIY Projects
UPC	707934024200
Unit Count	6.0 millilitre
Water Resistance Level	Not Water Resistant

Reviews

O**Z

We are purchasing regularly and very happy from the results Thank you!

5.07.2025

T**K

Great Product! Great Price!

25.03.2025

A**N

Each tube is packaged individually, I've got one with my gun stuff, one in the garage tool box, one in my leatherman sheath, and the rest in the packaging in a closet. AKA this is enough locktite for life for the average DIYer like me. Good price, OEM as far as I can tell. Just get the 12 pack and consider your locktite needs met till Valhalla.

21.07.2022

C**B

Rating is mostly due to only receiving 1 tube of threadlocker when it should have been a 12-pack. It's a generally good product, though it can be runny & difficult to control the application.

28.04.2022

F**D

Used to keep furniture fasteners intact

23.09.2021

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